Leslie Charleson best known for playing Monica Quartermaine on the soap opera General Hospital for decades passed away at the age of 79.

Although no cause of death was listed, Variety reported that she died Sunday after a long, unspecified illness.

The actress was recently hospitalized after a fall.

A report, which could not be confirmed independently, said she lost “a brave battle against cancer.”

“It is with a heavy heart that I announce the passing of our dead friend and colleague Leslie Charleson,” the daytime drama’s executive producer said in a statement on Instagram.

“Her enduring legacy has spanned nearly 50 years on General Hospital alone, and just as Monica was the heart of the Quartermaines, Leslie was a beloved matriarch of the entire cast and crew.”

She also appeared in A Flame in the Wind, Love is a Many Splendored Thing, The Rockford Files, The Wild West, The Streets of San Francisco,Marcus Welby, M.D., Mannix, Ironside, Happy Days and The Day of the Dolphin.